Grooving-machine



(NdMoael.)

A. V. ALLEN.

GROWING MACHINE.

Patem-.ed Ja.11. 10, 1838.

Zo/06% ifo 1^ WWWZJ@ UNITED STATES PATENT OFFICE.`

AUGUSTUS V. ALLEN, OF JOPLIN, MISSOURL GROQVlNG-MACHINE.

SPECIFICATION farming part of Letters Patent No. 376,057, dared January 1o, 1828. lApplication filed February 18, 1887. y Serial No. 228,132. (No model.)

'io all whom, it may concern,.-

Be it known that I, AUGUSTUS V. ALLEN, a citizen of the United States, residing at Joplin, in the county of Jasper, State of Missouri, haveinvented a new and useful Grooving-Machine, of which the following is a speci- -ication.

My invention relates to the grooving-machine now in common use in nearly all tinshops inthe United States, in which the grooved wheel is vcarried forward and back by a crank and cogged wheel at the back end of the machine. i

My object is to do away with the crank and cogged wheel and apply power to the groover direct, and also to improve the groovingwheel. I attain these objects by the mechanism illustrated in the accompanying drawings, in which- Figure 1 is a sidevview. Fig. 2 is a front view; Fig. 3, a side view of the grooved wheel and carriage; and Fig. 4, a front view ofthe grooved wheel and carriage, showing the haudles attached for propelling wheel and carriage.

Similar letters refer to similar parts throughout the several views.

A is astove-pipe mandrel bolted to the bench.

B is an iron arm curved at the rear end, where it is securely bolted to the mandrel.

C is the frame or carriage, within which runs the grooving-wheel D, the circumferential surface of which is concave to t the conveX surface of the mandrel, and provided with a groove or channel 'to fit the seam of the pipe. There are two smaller wheels, B, which are journaled inside the carriage and bear against the lower side of the curved arm,one of which is adjustable up and down by an ordinary setscrew, (not shown,) by which means the carriage and wheels will be held rigidly in place between the mandrel and arm, but will admit of free movement in and out.

The operation of the machine is as follows: The stove-pipe blank is edged and formed in the usual way, after which it is slipped on the mandrel, seam up, and directly under the groove in the grooving-wlieel. Now take hold Vof the two handles H and pull the wheel and carriage to and from you and remove the cylinder finished.

Having thus fully described my invention, 

